CN219227805U - Sound generating device and electronic equipment - Google Patents

Abstract

The utility model belongs to the technical field of electroacoustic equipment, and particularly relates to a sound generating device and electronic equipment. The sound generating device comprises a shell and a loudspeaker monomer, wherein the side part of the shell is provided with a sound outlet, the loudspeaker monomer is arranged in the shell, a vibrating diaphragm of the loudspeaker monomer divides the interior of the shell into a front sound cavity and a rear sound cavity, the front sound cavity is communicated with the sound outlet, the shell comprises a first side wall which is arranged opposite to the sound outlet, the first side wall and the sound outlet are respectively arranged at two ends of the vibrating diaphragm, a first included angle is formed between the first side wall and the vibrating direction of the vibrating diaphragm, and the first included angle is an acute angle and has an included angle range value of 45-75 degrees. According to the sound generating device provided by the utility model, the travel of the reflected wave in the front sound cavity can be effectively shortened, so that the interference of the reflected wave at the sound outlet is reduced, and the sound generating performance of the sound generating device is improved.

Description

Sound generating device and electronic equipment

Technical Field

The utility model belongs to the technical field of electroacoustic equipment, and particularly relates to a sound generating device and electronic equipment.

Background

The sound generating device comprises a shell and a sound generating component accommodated in the shell, wherein the vibrating diaphragm of the sound generating component divides the inner cavity of the shell into a front sound cavity and a rear sound cavity, and the front sound cavity is provided with a sound outlet hole so that the sound generating device can generate sound through the front sound cavity.

The side wall of the front acoustic cavity is subjected to die drawing according to a die forming demand angle, and the included angle between the side wall after die drawing and the vibration direction of the vibrating diaphragm is smaller, so that the shell is convenient to demold, but the side wall lacks acoustic theory guidance, and has limitation after die drawing, so that the sounding performance of the sounding device is reduced.

Disclosure of Invention

The utility model aims to at least solve the problem that the side wall of the front acoustic cavity influences the sounding performance of the sounding device. This object is achieved by:

a first aspect of the present utility model proposes a sound emitting device comprising:

the side part of the shell is provided with a sound outlet;

the loudspeaker unit is arranged in the shell, the vibrating diaphragm of the loudspeaker unit divides the interior of the shell into a front sound cavity and a rear sound cavity, the front sound cavity is communicated with the sound outlet, the shell comprises a first side wall which is arranged opposite to the sound outlet, the first side wall and the sound outlet are respectively arranged at two ends of the vibrating diaphragm, a first included angle is formed between the first side wall and the vibrating direction of the vibrating diaphragm, and the first included angle is an acute angle and the range value of the included angle is 45-75 degrees.

According to the sound generating device, the first side wall and the sound generating opening are arranged at the two ends of the vibrating diaphragm, the first included angle is formed between the first side wall and the vibrating direction of the vibrating diaphragm, the first included angle is an acute angle, the included angle range value is 45-75 degrees, the stroke of reflected waves in the front sound cavity can be effectively shortened, interference of the reflected waves at the sound generating opening is reduced, and the sound generating performance of the sound generating device is improved.

In addition, the sound generating device according to the present utility model may further have the following additional technical features:

in some embodiments of the present utility model, the first side wall includes a first end portion and a second end portion disposed opposite to each other along a vibration direction of the diaphragm, wherein the second end portion is disposed away from the diaphragm compared to the first end portion, and the second end portion is disposed close to the sound outlet compared to the first end portion.

In some embodiments of the utility model, the surface of the first sidewall is an arcuate surface or a beveled surface.

In some embodiments of the present utility model, the surface of the first sidewall is an arcuate surface, and the arcuate surface forms the first included angle between a tangential direction at the first end and a vibration direction of the diaphragm.

In some embodiments of the utility model, the first sidewall is a sidewall formed after the drawing.

In some embodiments of the utility model, a surface of the first sidewall is provided with a sound absorbing member.

In some embodiments of the utility model, the size of the diaphragm is greater than or equal to 12.25mm along the direction of the sound outlet towards the first side wall.

In some embodiments of the present utility model, the front acoustic chamber is further provided with a second side wall, the second side wall is disposed between the first side wall and the acoustic outlet, and the second side wall is spaced from the diaphragm and forms the front acoustic chamber therebetween.

In some embodiments of the present utility model, the housing includes a first housing and a second housing, the first housing and the second housing being matched and forming a receiving cavity for receiving the speaker unit, wherein the sound outlet is provided at a side portion of the first housing, and the front sound cavity is formed between the speaker unit and the first housing.

Another aspect of the utility model also proposes an electronic device having a sound emitting apparatus as described in any one of the preceding claims.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. Wherein:

FIG. 1 is a schematic front view of a sound generating apparatus according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of the sound emitting device of FIG. 1;

FIG. 3 is a schematic view of the first housing in FIG. 1;

FIG. 4 is a schematic view of a cross-sectional A-A structure according to an embodiment of the present application;

FIG. 5 is an enlarged schematic view of the portion B in FIG. 4;

FIG. 6 is a schematic view of a cross-sectional A-A structure of another embodiment of the present application;

fig. 7 is an enlarged schematic view of the portion C in fig. 6.

The reference numerals in the drawings are as follows:

1: a sound producing device;

10: a housing, 11: first housing, 111: annular projection, 112: sound outlet, 113: first side wall, 1131: first end, 1132: second end, 114: second side wall, 115: lead grooves, 116: filling holes, 12: second housing, 13: anterior acoustic chamber, 14: a rear acoustic cavity;

20: speaker monomer, 21: a vibrating diaphragm;

30: a lead wire;

40: damping fin.

Detailed Description

Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

For the problem that the sound emission performance of sound emission device is influenced to the reflected wave of solving preceding sound cavity, this application has provided a sound emission device and has this sound emission device's electronic equipment, according to sound emission device and electronic equipment of this application, can shorten the stroke of reflected wave in the preceding sound cavity effectively to reduce the interference of sound emission mouth department reflected wave, and then improve sound emission device's sound emission performance.

Referring to fig. 1 to 5, in some embodiments of the present utility model, a sound generating apparatus 1 includes a housing 10 and a speaker unit 20, an acoustic outlet 112 is formed at a side portion of the housing 10, the speaker unit 20 is disposed in the housing 10, a diaphragm 21 of the speaker unit 20 divides the interior of the housing 10 into a front acoustic cavity 13 and a rear acoustic cavity 14, the front acoustic cavity 13 is communicated with the acoustic outlet 112 and is communicated with an exterior of the housing 10 through the acoustic outlet 112, the housing 10 includes a first side wall 113 disposed opposite to the acoustic outlet 112, the first side wall 113 and the acoustic outlet 112 are disposed at two ends of the diaphragm 21, respectively, wherein a first included angle is formed between the first side wall 113 and a vibration direction of the diaphragm 21, and the first included angle is an acute angle and has an included angle range value of 45 ° to 75 °.

Specifically, the inside of the housing 10 is provided with a receiving chamber in which the speaker unit 20 is placed and sounded by vibration of the diaphragm 21. Wherein the diaphragm 21 is connected to the structure inside the housing 10 and divides the receiving chamber into a front sound chamber 13 and a rear sound chamber 14. The side wall of the casing 10 is provided with a sound outlet 112, so that when the diaphragm 21 vibrates, the front sound cavity 13 is communicated with the outside of the casing 10 through the sound outlet 112, and side sound production of the sound production device 1 is achieved. The front acoustic cavity 13 is further provided with a first side wall 113, and the first side wall 113 is disposed opposite to the acoustic outlet 112 and disposed at two ends of the diaphragm 21 respectively. The first side wall 113 is intersected with the vibration direction of the diaphragm 21, and forms an obtuse angle and an acute angle, the acute angle formed by the first side wall 113 and the vibration direction of the diaphragm 21 is a first included angle, and the included angle range of the first included angle is 45-75 degrees.

Since the angle between the first side wall 113 and the vibration direction of the diaphragm 21 can affect the travel of the reflected wave, the shorter the travel of the reflected wave when the angle of the first angle is larger, the smaller the influence on the sound emission performance of the sound emission device 1, whereas the longer the travel of the reflected wave when the angle of the first angle is smaller, the larger the influence on the sound emission performance of the sound emission device 1. By setting the range of the first included angle to 45 ° to 75 °, the travel of the reflected wave in the front acoustic cavity 13 can be effectively shortened, so that the interference of the reflected wave at the acoustic outlet 112 is reduced, and the acoustic performance of the acoustic device 1 is improved.

The angle of the first included angle may be any angle value between 45 ° -75 °, for example 45 °, 50 °, 60 °, 65 °, 70 °, 75 °. When the angle value of the first included angle is smaller than 45 degrees, the stroke of the reflected wave is longer due to the fact that the angle value of the first included angle is too small, and therefore sounding performance of the sounding device 1 is affected. When the angle value of the first included angle is greater than 75 °, the space of the front acoustic cavity 13 is too small, so as to interfere with the vibration of the diaphragm 21, and affect the normal sound production of the diaphragm 21.

Referring to fig. 1 to 5, in some embodiments of the present utility model, the first side wall 113 includes a first end portion 1131 and a second end portion 1132 disposed opposite to each other along the vibration direction of the diaphragm 21, wherein the second end portion 1132 is disposed away from the diaphragm 21 compared to the first end portion 1131, and the second end portion 1132 is disposed near the sound outlet 112 compared to the first end portion 1131.

Specifically, the first end 1131 is abutted against the diaphragm 21 or is close to the diaphragm 21, the second end 1132 is far away from the diaphragm 21 compared with the first end 1131, and the second end 1132 is close to the sound outlet 112 compared with the first end 1131, so that the first side wall 113 formed between the first end 1131 and the second end 1132 is opposite to the diaphragm 21, and further, the first side wall 113is used for reflecting sound waves generated during vibration of the diaphragm 21 towards the direction of the sound outlet 112, so as to shorten the travel of the reflected waves. When the second end 1132 is disposed away from the sound outlet 112 compared to the first end 1131, the first sidewall 113 is disposed away from the diaphragm 21, so as to prolong the wavelength of the reflected wave and affect the sound emission performance of the sound device 1.

As shown in connection with fig. 4 and 5, in some embodiments of the utility model, the surface of the first sidewall 113 may be arcuate. The arc surface forms a first included angle a between the tangential direction at the first end and the vibration direction of the diaphragm 21, and the included angle range of the first included angle a is 45-75 degrees. Specifically, the arcuate surface may be a partial arcuate surface.

As shown in fig. 6 and 7, in some embodiments of the present utility model, the surface of the first sidewall 113 may be an inclined plane, and a first included angle b is formed between the plane where the inclined plane is located and the vibration direction of the diaphragm 21, where the included angle of the first included angle b ranges from 45 ° to 75 °.

Wherein, when the angle value of the first included angle is larger within the range of 45-75 degrees, the travel of the reflected wave can be effectively shortened, and the interference of the reflected wave at the sound outlet at 112 is reduced.

Referring to fig. 1 to 5, in some embodiments of the present utility model, the first sidewall 113 is a sidewall formed after drawing. Compared with the side wall in the existing sound generating device, the first included angle in the present application is far greater than the included angle formed by the first side wall 113 and the vibration direction of the vibrating diaphragm 21 in the prior art, so that the travel of the reflected wave in the front sound cavity 13 can be effectively shortened, the interference of the reflected wave at the sound outlet 112 is reduced, and the sound generating performance of the sound generating device 1 is improved.

Referring again to fig. 1-5, in some embodiments of the present utility model, a sound absorbing member (not shown) is provided on a surface of the first sidewall 113. The sound absorbing material may be a sound absorbing layer formed by a method such as a sound absorbing cotton or a coating. Through setting up inhale sound spare, inhale sound spare and can absorb the reflected wave effectively to reduce the quantity of reflected wave, and then the sound production performance of sound production device 1 of improvement.

Referring again to fig. 1 to 5, in some embodiments of the present utility model, the size of the diaphragm 21 is 12.25mm or more along the direction of the sound outlet 112 toward the first sidewall 113.

Specifically, when the size of the diaphragm 21 in the direction of the sound outlet 112 toward the first side wall 113 is 12.25mm or more, the trough where the reflected wave interferes with the sound outlet occurs at 14Khz, affecting the receiving effect of the human ear on the sound wave, and therefore, the structure of the sound emitting device 1 in the present application is mainly used for the sound emitting device 1 in which the size in the direction of the sound outlet 112 toward the first side wall 113 is 12.25mm or more. But is in no way limited to this dimensional structure, the structure of the sound generating device 1 in the present application may also be adopted when the dimension of the diaphragm 21 in the direction of the sound outlet 112 toward the first side wall 113 is less than 12.25mm.

Referring to fig. 1 to 5, in some embodiments of the present utility model, the front acoustic chamber 13 is further provided with a second side wall 114, the second side wall 114 is disposed between the first side wall 113 and the acoustic outlet 112, and the second side wall 114 is spaced from the diaphragm 21 and forms the front acoustic chamber 13 between the diaphragm 21. Specifically, the second side wall 114 is disposed parallel to the diaphragm 21.

Specifically, the size of the space between the second side wall 114 and the diaphragm 21 determines the size of the front acoustic chamber 13, and by arranging the second side wall 114 parallel to the diaphragm 21, the orderly transmission of the sound waves emitted from the diaphragm 21 can be ensured.

Referring again to fig. 1 to 5, in some embodiments of the present utility model, the housing 10 includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are mated and form a receiving chamber for receiving the speaker unit 20, wherein a front sound chamber 13 is formed between the speaker unit 20 and the first housing 11.

Specifically, the first housing 11 and the second housing 12 are disposed opposite to each other, and may be connected by means of a snap-fit, adhesive or bolting, and form a receiving chamber. The speaker unit 20 is disposed in the receiving chamber and forms a front sound chamber 13 with the first housing 11 and a rear sound chamber 14 with the second housing 12. Wherein. The surface of the first housing 11 facing the second housing 12 is provided with an annular protrusion 111, and the center of the annular protrusion 111 is provided with a groove structure. The vibrating diaphragm 21 of the speaker unit 20 is abutted against the end face of the annular protrusion 111, and the vibrating diaphragm 21 is arranged opposite to the groove structure, so that the vibrating space of the vibrating diaphragm 21 is ensured. Wherein, a front acoustic cavity 13 is formed between the diaphragm 21 and the annular bulge 111, and the annular bulge 111 is provided with a communication port for communicating the acoustic outlet 112 with the front acoustic cavity 13.

Referring again to fig. 1 to 5, in some embodiments of the present utility model, a wire groove 115 is further provided in the first housing 11, and a wire 30 for connecting the speaker unit 20 and an external power source is inserted into the wire groove 115, thereby fixing the wire 30 and preventing the wire 30 from being pressed when the first housing 11 and the second housing 12 are mated.

Referring again to fig. 1-5, in some embodiments of the present utility model, the housing 10 is further provided with a fill aperture 116. The filling hole 116 may be formed in the first housing 11 or the second housing 12 and is in communication with the rear acoustic chamber 14, and the sound-absorbing particles may be filled into the rear acoustic chamber 14 through the filling hole 116, and the filling hole 116 may be sealed by the damping sheet 40 to prevent the sound-absorbing particles in the rear acoustic chamber 14 from flowing out through the filling hole 116, thereby reducing noise generated when the diaphragm 21 vibrates through the sound-absorbing particles. The damping fin 40 seals the filling hole 116, and the filling hole 116 is used as a sound leakage hole for communicating the rear sound cavity 14 and the outside, so as to adjust the air pressure balance of the front sound cavity 13 and the rear sound cavity 14 of the sound generating device 1 and avoid the air pressure difference from affecting the vibration of the vibrating diaphragm 21.

Another aspect of the present utility model also proposes an electronic device having the sound emitting apparatus 1 of any one of the above embodiments. The electronic device may be a loudspeaker, a headset, an automobile or other device that emits sound through the sound emitting device 1.

Because the electronic device in the present application has the same technical features as the sound generating device 1 in any of the above embodiments, the same technical effects can be achieved, and the details are not repeated here.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A sound emitting device, comprising:

the side part of the shell is provided with a sound outlet;

the loudspeaker unit is arranged in the shell, the vibrating diaphragm of the loudspeaker unit divides the interior of the shell into a front sound cavity and a rear sound cavity, the front sound cavity is communicated with the sound outlet, the shell comprises a first side wall which is arranged opposite to the sound outlet, the first side wall and the sound outlet are respectively arranged at two ends of the vibrating diaphragm, a first included angle is formed between the first side wall and the vibrating direction of the vibrating diaphragm, and the first included angle is an acute angle and the range value of the included angle is 45-75 degrees.

2. The sound generating apparatus of claim 1, wherein the first sidewall includes a first end portion and a second end portion disposed opposite to each other along a vibration direction of the diaphragm, wherein the second end portion is disposed farther from the diaphragm than the first end portion, and the second end portion is disposed closer to the sound outlet than the first end portion.

3. The sound emitting apparatus of claim 2 wherein the surface of the first side wall is arcuate or beveled.

4. The sound generating apparatus of claim 3 wherein the surface of the first sidewall is an arcuate surface, the arcuate surface forming the first angle between a tangential direction at the first end and a direction of vibration of the diaphragm.

5. The sound emitting apparatus of claim 1 wherein the first sidewall is a post-draft sidewall.

6. The sound emitting apparatus of claim 1 wherein the surface of the first side wall is provided with sound absorbing members.

7. The sound generating apparatus of claim 1 wherein the diaphragm has a dimension of 12.25mm or greater along the direction of the sound outlet toward the first side wall.

8. The sound generating apparatus of claim 1 wherein the front acoustic chamber is further provided with a second side wall disposed between the first side wall and the sound outlet, the second side wall being spaced from and forming the front acoustic chamber with the diaphragm.

9. The sound generating apparatus of claim 1, wherein the housing comprises a first housing and a second housing, the first housing and the second housing cooperate and form a receiving cavity for receiving the speaker unit, wherein the sound outlet is provided at a side portion of the first housing, and the front sound cavity is formed between the speaker unit and the first housing.

10. An electronic device characterized by having the sound emitting apparatus according to any one of claims 1 to 9.

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